Local AI · Recipe · 1× DGX Spark

Qwen3.8-27B NVFP4 with vLLM on 1× DGX Spark (r0b0tlab)

Qwen3.8-27B NVFP4 with vLLM on 1× DGX Spark (r0b0tlab): 27.8 tok/s according to github.com (dataset as of Nov 3, 2026).

by r0b0tlab

27.8tok/sMixed

1 request, mixed prompt set, with MTP

Source: github.com

Intelligence (original model) · Artificial Analysis34with thinking no thinking 20

Instructions in the README Repo

Engine: vLLM v0.27.2rc0-sm121 (7f7a32c)
Quantization: NVFP4 (+ BF16-MTP-Kopf)
Model family: Qwen3.8-27B
Context: 262,144
Parameters: 27B dense
Creator: r0b0tlab
GitHub stars: 27
Repo updated: Aug 20, 2026

Measurements

Every sourced value of this recipe, each with its condition and source. Bars relative to the largest value in the group.

Decode · 1 request

Mixed (decode)27.8 tok/scontext 512 in → 2048 out (random) · MTP K=3, dedicated c1 (2048), think-off Source
Peak (decode)67.1 tok/sDFlash2 K8 (Overlay 0.1.1), r0b0bench core-subset concurrency c1 agg tok/s, think-off Source

Time to first token

Shorter is better.

Prompt not stated259 msDFlash2 K8 r0b0bench TTFT Source

What you need

Hardware: 1 × NVIDIA DGX Spark (GB10)
Weights: Main weightsr0b0tlab/Qwen3.8-27B-NVFP4-MTP-sm121 Apache-2.0
Draft modelz-lab/Qwen3.8-27B-DFlash2 Apache-2.0
Draft modelRadixArk/Qwen3.8-27B-DSpark other
Engine: vLLM v0.27.2rc0-sm121 (7f7a32c)
Context: 262,144 tokens

Sources

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